Door lock



- Aug. 19 9 1924. 1,505,865

M. COSTA DOOR LOCK Filed Oct. 17, 1923 s Sheets-Sheet 1 6; 2 m 6Q v M. COSTA DOOR LOCK Filed Oct. 17, 1925 5 Sheets-Shet 2 WITNESS: ATTORNEY M. COSTA v DOOR LOCK Filed Oct. 17, 1923 5 Sheets-Sheet 5 INVENTOR WITNESS: ATTORNEY Patented Aug. 19, 1924.

UNITED STATES IABIO OI NEW You, H. Y.

DOOBLOCI.

Application filed October 17, 1928. Serial Io. 660,100.

To all whom it may comm:

Beit known that I, MARIO Cos-m, a citizen of'Italy, residing "at New York, in the county of New York and State of New York, have invented new and useful Improvements in Door Locks, of which the following is a specification.

Anobject of this invention is to produce a door lock of such construction as will rigidly hold the door in locked position and which cannot be unlocked except by a rson holding the proper construction of ey and acqua nted with the manipulation of the key.

A further object is to provide a permutation lock for doors, in which three right angularly disposed bolts are moved into suitable keepers when the door is locked, andoif course, out of suchkeepers when the locking bolts are moved to retracted positions, and wherein novel means is provided for moving the bolts to either of such positions.

A still further object is to produce a lock of this character which may be operated from either side of a door, which cannot be picked when the bolts are thrown to locking position, which affords a firm barrier for the door, and which cannot be operated by other than the proper key.

A still further o ject is the production of a permutation lock for doors in which the elements constitutin the same are adiustably associated, so t at the lock may be secured on doors of varying thickness.

To the attainment of the foregoing and other objects which will present themselves as the nature of the invention is better understood, the im rovement resides in the construction, com ination and operative'asosed bythe sociation of parts, such as is disc drawings which accompany and which form part of this application.

a In the drawings Fi re 1 isa substantially central vertical longitudinal sectional view through a lock in accordance'with this invention, the same being in applied pegsition, and the abutment therefore ing a in section.

Figure 2 is a sectional view on the line 2-2 of Fig. 1.

Figure 3 is a sectional view on the line 3-3-of Fig. 1.

F' re is a view approximately centrallongitudinah through the eecu the parts are arranged as in Figure 14.

barrel, showing the position of parts when the key is first inserted in the key opening in the barrel.

Fi re 5 is a similar sectional view showing t e arran ement of parts when the key has been furt er removed to permit of the turning of the barrel.

Figure 6 is a sectional view on the line 6-6 of Fig. 1.

Figure 7 is a sectional view on the line 7.7 of Fig. 1.

Figure 8 is a to Fi re 9 is a barre Figure 10 is a side elevation of the key.

Figure 11 is a top plan view thereof.

Figure 12 is a sectional view on the line 12-12 of Fi re 10.

Figure 13 IS a sectional view on the line 18-13 of Figure 10.

Fi re 14 is a sectional view approximate y on the line 14- -14 of Figure 1.

Figure 15 is a sectional view similar to Fi re 14, but showing the springinfluenced ho ding dogs for the bolts moved to released position.

Figure 16 is a sectional view through the toothed wheel which engages the rack teeth of the bolts and the barrel therein, as when Figure 17 is a similar view showing the arrangement of parts as when the device is in the position i lustrated in Figure 15.

Fi re 18 is a perspective view of one of the ogs.

Figure 19 is an elevation to-illustrate the arrangement of the lock construction on the cor.

M improvement is especially designed for ockin which to. uables are deposited, to render such rooms or safes burglar proof. The casing in which the improvement is arra is so secured to the door that its removal b unauthorized persons is impossible, althoug I have not on the drawings, disclosed any particular means for fastening said casi on the door. Should it be found desirab e and especially on doors of hollow metal construction, the casing is let in the said door which may be accomplished in the manufacture of the door.

Referrin now to-the drawings in detail,

plan view of the barrel. ttom plan view of the d the numera 1 designates a hinged door and the doors of rooms or safes in 2 the casing therefor. The casing, providing the door opening, has a side keeper 3, a top keeper 4, and a bottom keeper 5. In ahnement with the keepers 4 and 5 is the straight branch 6 of the, casing, the angle branch 7 being in a line with the keeper 3.

When the lock is employed in connection with doors other than safe doors, the same may be actuated from either side thereof and such construction I have disclosed in the drawings.

Also the casing and keepers are arranged upon the interior of the room that is closed by the door. I

Let in the door, from the outer side thereof, in alinement' with the center of the casing there is an escutcheon 8. By reference to Figures 2 and 3 of the drawings, it will be noted that the sides of the escutcheon are parallel and straight; so that the turning thereof is prevented. The outer face or front of the escutcheon body is rounded. The escutcheon is effectively secured to the door in any desired or preferred manner.

The escutcheon has a round bore in which there is received the cylinder or barrel 9 of the im rovement. The barre from its outer sur ace is provided with a T-shaped slot 10 and has its lower wall provided with a plurality of spaced cross sectionally rounded openings that communicate with the pin openings 11 on the body of the escutcheon 8. The pins 12 on the pin 0 en ings 11 are influenced outwardly thererrom by springs 13, and the said ins are incontacting engagement with and influenced by, pin sections, (which for distinction I will refer to as plu into the straight central branch of the -shaped slot 10. The plugs 14, have their outer ends rounded and preferably headed by caps 15, the said ca s limiting the movements of the plugs in t e direction of the pins 12. The springs 13 are designed to normally force the pins 12 and the plugs 14 to the position illustrated in Figures 1 and 4 of the drawings, so that the barrel 9 is held from rotation in the body of the-escutcheon.

On the upper wall of the body of the escutcheon, and entering the widened upper passage of the T-shaped slot 10 in the'barrel 9 there is held a revoluble ball 16.

The barrel 9 is of a materially greater length than the escutcheon, and has either secured thereon or fastened thereto an annu-lar member in the nature of a flan e 17 that contacts with the inner wall 0 the escutcheon body. The flange 17 is normally held in such engagement through the medium of a spring 18 that is in contact with the rear we or with a disk on the said rear wall of a simple compartment 20 in the bolt casing.

The rear wall of the compartment 20 is centrallyformed with a square pocket 21 in which there is received a square portion 22 of the bolt release member. This member has the end thereof that is received in the compartment 20 square or rectangular in cross section as indicated by the numeral 23. This portion of the bolt release member that passes through the central opening in the rear wall of the compartment 20 is preferably rounded in cross section. This portion or stem indicated by the numeral 24, is provided with a central slot 25 that enters from its outer end and with a plurality of spaced openings 26 that pass transversely through the slot. The portion of the barrel 9 that extends beyond the flange 17 thereof is round in cross section and is hollow. This portion being'indicated by the numeral 27 receives therein the stem 24' of the bolt re'ease member 23. The portion 27 of the barrel is centrally formed with a longitudinally extending web 28 to be received in the slot 25 of the stem 24 and the said portion 27 of the barrel and the Web are provided with alining openings that register with one of the openlngs 26 in the stem 24, and there is passed through these registering openings a locking pm 29. By such arrangement it will be noted that the lock release element 23 is adjustably connected with the barrel so that the device may be emp oyed in doors of varying thicknesses. The face of the casin on the inner side of the door is provide with a construction similar to that just described although in this instance the adjustable connection between the barrel and the bolt release member 23 need not be employed.

Slidably arranged in the branches 6 and 7 of the casing there are bolts movable into and out of the keepers 3, 4 and 5.

The upper slidable bolt is indicated at 30, as the lower bolt is indicated at 31 and the lateral y arran ed bolt by the numeral 32. The inner en s of these bolts are reduced and formed with rack teeth 30', 31'

respective and 32' respectively. The racks 30' and 31 are disposed opposite each other and the rack teeth 32 are disposed to one side of the rack 31'. All of the racks find suitable bearings in the casin and the racks 30 and 31' have their en s provided with inwardly directed flanges or heads 33 and 34 res ectively. Each head has a pocket 35 and 36 respectively. In these pockets, there are normally seated the headed ends 37 of dogs 38. Each dog is pivotally supported as at 39 in the casing. The shank or body of each dog on what I term its outer side, is formed with a cam enlargement 40. Surrounding each pivot 39 there is the central coiled spring 41 of two armed springs'42. One arm of each spring contacts the rear wall of the cam enlargement 40 to swing the dogs 38 to bring the heads 3? thereof into the pockets 35 and 36 in the heads at the rack ends of the bolts 30 and 31. The second end of the springs 42 are in contact with the walls of the cas.

ing. In this manner, it will be seen that the locking bolts are held in their kee ens and that accidental movement thereo as prevented. Also the construction revents an unlocking movement oi said olts by the bolts are locked by the dogs, the wheel t3 camot be turned, and therefore there is ioumalled in the bore of the wheel 43 a a l. The sleeve has a squared bore sleeve and has a peripheral lug 45 that is received in a notch 46 on the wheel 23. n one, end

. oi the sleeve 14 there is centrally secured an atm es having a squared opening therethrough that vegisters with a similar opening 47 disposed in the member which I have termed the sleeve. The sleeve 44 at its opposits end is piovided with a similar openin 17 I becured on the face of the toothed wheel 43 there is one end of an inwardly arched spring 48 and this spring contacts one edge of the arm it? to tum the sleeve to bring the lug t thereon into contact with one of the end walls of the notch 46 in the wheel 43, as disclosed in Figure 16 Oil the drawings. so arran ed, the rounded ends 49 of the arm 14% is brought out of engagement with the cam surface 4 0 on the dogs 18, as clearly disclosed in Figure 14 oi the drawllhe key 15 for the lock has its shank provided with an atcuate head portion 51 to be received in he upper arcuate branch of the slot 16- in the barrel 9. From the head centrally depends the web 52 of the shanlz. the said central ortion or web, hav' cleits 53 corresponding in number with the plugs 43. The central portion or web 52 of the hey is oi a less'length than the depth of the central passage in the "i? shaped slot 1b of the barrel 9. The head 51 oi the key shnli is formed from its outer end with a centrally arranged longitudinal groove 54., wnose lower wall is rounded, and which groove communicates with a transverse groove 55 also provided upon the said head of the hey shank. The lower wall oi the groove55 is also rounded' v The operation may be briefly described as follows:

The key is inserted in the key slot of the barrel, first to the position illustrated on Figure 4: of the drawn This ermits of the heads of'the dogs ing recelved in the clefts' 58 of the key shank. This also causes the dogs to be moved toward the spring influenced pins 12, so that the lower edges of the dogs are in alinement with the. outer wall of the barrel. The key is moved inwardly through the barrel to the position illustrated in l i re 5 of the drawing. Such movement will cause the plug to travel with the key and will bring the transverse groove 55 in the head of the key shank to receive therein the'ball 16. it is to be noted that prior to the arrangement of the ball in the transverse branch 55 of he groove 54, the hey cannot be turned and consequently the barrel cannotbe rotated. The inward movement'oi the barrel imparts a like movement to the hey release and actuating element 23, the latter being moved into the bore oi the toothedwheel 43. The key is turned to impart a like movement to the barrel and to the hey release 23. It is oi course to be noted that the key release and actuating element 23 is normally held from taming by the engagement of the flange 22 with the walls of the pocket 21. When the parts are moved, as previously described, the flange 22 will be brought out of the pocket 29, andthe turning of the element 23 will tum the barrel 4A and its arm 46', moving the latter from the position illustrated in Figures 14: and 16 to the position illustrated in Figures and 3.7. Thus the arm, contacting the cam elements 40 11 the dogs swing the same to bring the heads 37 thereof out of the pockets 36 on the rack ends of the bolts and 31. The key is further turned to rotate the parts one complete revolution which slides the bolts to-released position, and permits of the spring 38 returning the arm 46 to original position.

When the bolts are thus moved to unlocking position the heads of the dogs ride against the outer and straight edges of the rack extensions for the bolts, 30 and 31. When the bolts are to. be moved into their keepers, the operation is similar to that described. except that the key and elements are turned in a reverse direction. When the bolts are slid into their keepers, the arm 46 will have as sumed the osition illustrated iii-Figures 14 and 16 so t at the arm 46' is out of engagement with the cam elements on the dogs 38. and the springs 42 will swing the dogs to bring the heads 37 thereof into the pockets 35 and 36 on the rack ends of the bolts 30 and 31, thus again locking the door and holding the locking bolts against movement in either direction. Such turning of the key will again bring its longitudinal groove 54 in a line with the ball 16 so that the key may be withdrawn. The key is influenced in a direction outward from the barrel by the spring 18 and through the medium of a stop flange 17 on the barrel, the

plugs will again be brought opposite the pins 12, and upon the entire withdrawal of the key to prqected position as disclosed in Figure 1. The spring 18 also seats the hold ing flange 22 of the bolt release and operating elements 23 in its ocket 21. It is believed that t e foregoing description, when taken in connection. 'with the drawings will fully set forth the construction of my improvements, its advantages and operation. I have herein set forth a satisfactory embodiment of my invention as it now appears to me, but the nature thereof is such as to necessarily render the same susceptible to such changes and modifications as fall within the scope of what I claim.

Having thus described my invention what I desire to claim as new is 1. A means for locking a door in itscasing, angularly disposed bolts slidable into keepers in the casing and each of said bolts having an inner racked surface, a toothed Wheel engaging said racks, spring influenced swingable means engaging, the inner ends of the bolts when the latter are thrown, means associated with the wheel and freely movable to a determined point thereon and engageable with the swingablc holding means to release the same to mit of the turning of the wheel to slide the bolts, and means for turning said wheel.

2. A means for lockinga door in its casing, comprising bolts movable into keepersin the casing, each of said bolts having a reduced toothed inner end portion, that terminates in a head, a wheel engaging the toothed portions of the bolts, pivotally supported spring influenced dogs to engage the heads of the bolts for holding the same when thrown. an arm carrying sleeve in the bore of the wheel freely movable in the wheel for predetermined distances, spring means normally retaining the arm of the sleeve in one position and out of contacting engagement with the dogs, slidable and revoluble means movable to engage in the sleeve to turn the latter to first cause the arm thereof to engage the dogs t swing the same to bolt release position and thereafter to turn the wheel and sleeve to cause the sliding of the bolts.

3. A means forlocking a door in its casing, comprising bolts having inner rack ends, said bolts being slidable into keepers in the casing, a toothed wheel engaging the racks of the bolts, pivotally supported cam carrying spring dogs to engage the inner ends of the bolts to hold the bolts when thrown, a toothed wheel engaging the racks of the bolts, a sleeve journalled therein havlng an outer arm, means between the sleeve and wheel permitting a free swinging move- -ment of the latter at determined distances pe-rv key operated means to engage in the sleeve to turn the latter to brin the arm thereof against the cams on the (fogs to release the bolts and afterward cause the turning of the wheel and thesliding of the bolts.

4. A means for locking a door in its casing, com-prising bolts sliding into keepers in the casing, each of said bolts having an inner rack surface terminating in a head formed with a pocket, a toothed wheel engagin the racks of the bolts, pivotally suport spring influenced cam carrying dogs aving heads engageable in the pockets of the bolts for holding the bolts when thrown, a sleeve on the'bore of the wheel, an arm thereon having a central rectangular opening therein, means between the arm and wheel permitting a limited free turning of the arm and sleeve on said wheel, spring" means carried by the wheel engaging the arm to move the latter away from cont icting engagement with the cams of the dogs,

key operated means for turning the arm to swing the dogs to release the bolts and thereafter turning the wheel to slide said bolts, said means comprising a spring influenced. throw element normally sustained from turning, and including a rectangular 'end which is movable into theopcnmg in the arm.

-5. A means for locking a door in. its cas-f ing, comprising bolts slidable into keepers in the. casing, spring influenced swingable 7 means for holding the bolts when thrown home, revoluble means for sliding the bolts,

means carried thereby and turnable at precrating means including a. barrel, an escutcheon body in which the barrelis received,

spring influenced pins in the v escutcheon body, plugs resting on the pins and movable into the barrel, 'sprin influenced means normally'holding the p ugs in alinement with the pins, a bolt throw and release element ad'ustably secured to the. barrel, and movable with the sliding of the barrel when influenced by the key to engage the first mentioned means to turn thelatter and slide the bolts.-

6. A means for looking a door in its casing, including bolts slidable into keepers in the casing, pivotally supported sprin influenced means engaging the inner on s of the bolts for holding the same from movement when thrown home, revoluble means for sliding the bolts, means carried thereby and movable for a' predetermined distance thereon to engage with the bolt holding means to swing the latter from bolt eng ement, key operated means for actuating t e last mentioned means, including an escutcheon, a barrel revoluble therein, spring" influenced pins in the escutcheon, plugs in the barrel normally eontactin with the pins, a bolt release and actuatmg member adjustably secured in the barrel, spring means influencing the barrel and said member to one position, means engaging the member when so influenced to prevent the turning thereof, a key having clefts to engage t e plugs to permit the sliding and turning of the barrel in the escutcheon to bring the bolt release and actuating member into operative engagement and means carried by the escutcheon and engageable with the key for preventing the inward movement and turning thereof until said key has" been brought to a determined position in the barrel.

7. A means for looking a swingable door in its casing, comprising bolts movable into keepers in the casing, swingable means to engage the bolts to hold the same when thrown home, revoluble means for sliding the bolts normally sustained inactive by the swingable means, means carried by the rev- .oluble means susceptible to a predetermined free movement thereon to" move the swingable means out of bolt engagement,

key operated means for said bolt release and operating means comprising a fixed escutch 'eon carrying spring influenced pins and carrying a revoluble element opposite the pins, a ar'rel in the escutcheon having a T- sha ed groove at its upper portion and in WhlCh the revoluble element is received, plugs in the barrel normally contacting the pins, a normally housed member secured to the barrel, sprin means holding the member housed and t e barrel in one position, a key having a T-shaped shank whose widened head .is grooved longitudinally and transversely and whose lower edge is provided with clefts to receive the plugs therein when the key is inserted a predetermined distance in the barrel, and said key when fully inserted in the barrel having the revoluble element of: the eseutcheon received in the transverse groove in the head thereof and when in such. position the plugs will have been moved with the key and the housed operating member brou ht to bolt release and turning position an so actuated by the turning of the key and barrel.

In testimony-whereof I have aed my I signature. J

Mauro oosra. 

